you can use a 3v relay, let the mcf01 to control the relay as a switch, then u can add as many LED a ...
Michael336 發表於 2010-5-26 01:09
回復 cx104
if i remember, it's selling for $6.5 each, i got this from Wa Fai at Shum Shui Po.
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Michael336 發表於 2010-5-26 21:16
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